migrate gateworks board support to the new at24 eeprom driver

SVN-Revision: 13450
2008-11-30 18:12:21 +00:00 · 2008-11-30 18:12:21 +00:00 · 083320dbe2
commit 083320dbe2
parent 7801e8d2bc
12 changed files with 375 additions and 467 deletions
--- a/target/linux/generic-2.6/patches-2.6.27/450-i2c_at24_add_kernel_interface_read_write.patch
+++ b/target/linux/generic-2.6/patches-2.6.27/450-i2c_at24_add_kernel_interface_read_write.patch
@ -0,0 +1,134 @@
+Subject: [PATCH 2/3] I2C: at24: add kernel interface for reading/writing EEPROM
+Date: Monday 25 August 2008
+From: Kevin Hilman <khilman@deeprootsystems.com>
+To: davinci-linux-open-source@linux.davincidsp.com
+
+This patch adds an interface by which other kernel code can read/write
+detected EEPROM.
+
+The platform code registers a 'setup' callback with the
+at24_platform_data.  When the at24 driver detects an EEPROM, it fills
+out the read and write functions of at24_iface and calls the setup
+callback.  The platform code can then use the read/write functions in
+the at24_iface struct for reading and writing the EEPROM.
+
+Original idea, review and updates by David Brownell <david-b@pacbell.net>
+
+Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
+---
+ drivers/i2c/chips/at24.c |   42 +++++++++++++++++++++++++++++++++++-------
+ include/linux/i2c/at24.h |   10 ++++++++++
+ 2 files changed, 45 insertions(+), 7 deletions(-)
+
+--- a/drivers/i2c/chips/at24.c
+++ b/drivers/i2c/chips/at24.c
+@@ -53,6 +53,7 @@
+ 
+ struct at24_data {
+ 	struct at24_platform_data chip;
+	struct at24_iface iface;
+ 	bool use_smbus;
+ 
+ 	/*
+@@ -264,13 +265,6 @@ static ssize_t at24_bin_read(struct kobj
+ 
+ 
+ /*
+- * REVISIT: export at24_bin{read,write}() to let other kernel code use
+- * eeprom data. For example, it might hold a board's Ethernet address, or
+- * board-specific calibration data generated on the manufacturing floor.
+- */
+-
+-
+-/*
+  * Note that if the hardware write-protect pin is pulled high, the whole
+  * chip is normally write protected. But there are plenty of product
+  * variants here, including OTP fuses and partial chip protect.
+@@ -386,6 +380,30 @@ static ssize_t at24_bin_write(struct kob
+ 
+ /*-------------------------------------------------------------------------*/
+ 
+/*
+ * This lets other kernel code access the eeprom data. For example, it
+ * might hold a board's Ethernet address, or board-specific calibration
+ * data generated on the manufacturing floor.
+ */
+
+static ssize_t at24_iface_read(struct at24_iface *iface, char *buf,
+			      off_t offset, size_t count)
+{
+	struct at24_data *at24 = container_of(iface, struct at24_data, iface);
+
+	return at24_eeprom_read(at24, buf, offset, count);
+}
+
+static ssize_t at24_iface_write(struct at24_iface *iface, char *buf,
+			       off_t offset, size_t count)
+{
+	struct at24_data *at24 = container_of(iface, struct at24_data, iface);
+
+	return at24_eeprom_write(at24, buf, offset, count);
+}
+
+/*-------------------------------------------------------------------------*/
+
+ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
+ {
+ 	struct at24_platform_data chip;
+@@ -413,6 +431,9 @@ static int at24_probe(struct i2c_client 
+ 		 * is recommended anyhow.
+ 		 */
+ 		chip.page_size = 1;
+
+		chip.setup = NULL;
+		chip.context = NULL;
+ 	}
+ 
+ 	if (!is_power_of_2(chip.byte_len))
+@@ -449,6 +470,9 @@ static int at24_probe(struct i2c_client 
+ 		goto err_out;
+ 	}
+ 
+	at24->iface.read = at24_iface_read;
+	at24->iface.write = at24_iface_write;
+
+ 	mutex_init(&at24->lock);
+ 	at24->use_smbus = use_smbus;
+ 	at24->chip = chip;
+@@ -521,6 +545,10 @@ static int at24_probe(struct i2c_client 
+ 		at24->write_max,
+ 		use_smbus ? ", use_smbus" : "");
+ 
+	/* export data to kernel code */
+	if (chip.setup)
+		chip.setup(&at24->iface, chip.context);
+
+ 	return 0;
+ 
+ err_clients:
+--- a/include/linux/i2c/at24.h
+++ b/include/linux/i2c/at24.h
+@@ -15,6 +15,13 @@
+  * is bigger than what the chip actually supports!
+  */
+ 
+struct at24_iface {
+	ssize_t (*read)(struct at24_iface *, char *buf, off_t offset,
+			size_t count);
+	ssize_t (*write)(struct at24_iface *, char *buf, off_t offset,
+			 size_t count);
+};
+
+ struct at24_platform_data {
+ 	u32		byte_len;		/* size (sum of all addr) */
+ 	u16		page_size;		/* for writes */
+@@ -23,6 +30,9 @@ struct at24_platform_data {
+ #define AT24_FLAG_READONLY	0x40	/* sysfs-entry will be read-only */
+ #define AT24_FLAG_IRUGO		0x20	/* sysfs-entry will be world-readable */
+ #define AT24_FLAG_TAKE8ADDR	0x10	/* take always 8 addresses (24c00) */
+
+	int             (*setup)(struct at24_iface *, void *context);
+	void		*context;
+ };
+ 
+ #endif /* _LINUX_AT24_H */
--- a/target/linux/ixp4xx/config-2.6.27
+++ b/target/linux/ixp4xx/config-2.6.27
@ -55,7 +55,7 @@ CONFIG_ARM=y
 # CONFIG_ARM_THUMB is not set
 # CONFIG_ARPD is not set
 # CONFIG_ARTHUR is not set
-# CONFIG_AT24 is not set
+CONFIG_AT24=y
 CONFIG_ATA=m
 # CONFIG_ATA_NONSTANDARD is not set
 # CONFIG_ATA_PIIX is not set
@ -297,7 +297,7 @@ CONFIG_RWSEM_GENERIC_SPINLOCK=y
 CONFIG_SCSI_WAIT_SCAN=m
 # CONFIG_SENSORS_AD7414 is not set
 CONFIG_SENSORS_AD7418=y
-CONFIG_SENSORS_EEPROM=y
+# CONFIG_SENSORS_EEPROM is not set
 CONFIG_SENSORS_MAX6650=y
 # CONFIG_SENSORS_PC87360 is not set
 CONFIG_SENSORS_W83781D=y
--- a/target/linux/ixp4xx/patches-2.6.27/010-ixp43x_pci_fixup.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/010-ixp43x_pci_fixup.patch
@ -0,0 +1,11 @@
+--- a/arch/arm/mach-ixp4xx/include/mach/hardware.h
+++ b/arch/arm/mach-ixp4xx/include/mach/hardware.h
+@@ -18,7 +18,7 @@
+ #define __ASM_ARCH_HARDWARE_H__
+ 
+ #define PCIBIOS_MIN_IO		0x00001000
+-#define PCIBIOS_MIN_MEM		(cpu_is_ixp43x() ? 0x40000000 : 0x48000000)
+#define PCIBIOS_MIN_MEM		0x48000000
+ 
+ /*
+  * We override the standard dma-mask routines for bouncing.
--- a/target/linux/ixp4xx/patches-2.6.27/190-cambria_support.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/190-cambria_support.patch
@ -1,47 +1,3 @@
--- a/arch/arm/mach-ixp4xx/Kconfig
-+++ b/arch/arm/mach-ixp4xx/Kconfig
-@@ -25,6 +25,14 @@ config MACH_AVILA
- 	  Avila Network Platform. For more information on this platform,
- 	  see <file:Documentation/arm/IXP4xx>.
- 
-+config MACH_CAMBRIA
-+	bool "Cambria"
-+	select PCI
-+	help
-+	  Say 'Y' here if you want your kernel to support the Gateworks
-+	  Cambria series. For more information on this platform,
-+	  see <file:Documentation/arm/IXP4xx>.
-+
- config MACH_LOFT
-     bool "Loft"
-     depends on MACH_AVILA
-@@ -208,7 +216,7 @@ config CPU_IXP46X
- 
- config CPU_IXP43X
- 	bool
-	depends on MACH_KIXRP435
-+	depends on MACH_KIXRP435 || MACH_CAMBRIA
- 	default y
- 
- config MACH_GTWX5715
--- a/arch/arm/mach-ixp4xx/Makefile
-+++ b/arch/arm/mach-ixp4xx/Makefile
-@@ -7,6 +7,7 @@ obj-pci-n	:=
- 
- obj-pci-$(CONFIG_ARCH_IXDP4XX)		+= ixdp425-pci.o
- obj-pci-$(CONFIG_MACH_AVILA)		+= avila-pci.o
-+obj-pci-$(CONFIG_MACH_CAMBRIA)		+= cambria-pci.o
- obj-pci-$(CONFIG_MACH_IXDPG425)		+= ixdpg425-pci.o
- obj-pci-$(CONFIG_ARCH_ADI_COYOTE)	+= coyote-pci.o
- obj-pci-$(CONFIG_MACH_GTWX5715)		+= gtwx5715-pci.o
-@@ -28,6 +29,7 @@ obj-y	+= common.o
- 
- obj-$(CONFIG_ARCH_IXDP4XX)	+= ixdp425-setup.o
- obj-$(CONFIG_MACH_AVILA)	+= avila-setup.o
-+obj-$(CONFIG_MACH_CAMBRIA)	+= cambria-setup.o
- obj-$(CONFIG_MACH_IXDPG425)	+= coyote-setup.o
- obj-$(CONFIG_ARCH_ADI_COYOTE)	+= coyote-setup.o
- obj-$(CONFIG_MACH_GTWX5715)	+= gtwx5715-setup.o
 --- /dev/null
 +++ b/arch/arm/mach-ixp4xx/cambria-pci.c
@@ -0,0 +1,74 @@
@ -121,49 +77,47 @@
 +subsys_initcall(cambria_pci_init);
 --- /dev/null
 +++ b/arch/arm/mach-ixp4xx/cambria-setup.c
-@@ -0,0 +1,444 @@
+@@ -0,0 +1,429 @@
 +/*
 + * arch/arm/mach-ixp4xx/cambria-setup.c
 + *
 + * Board setup for the Gateworks Cambria series
 + *
-+ * Copyright (C) 2008 Imre Kaloz <Kaloz@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
 + *
 + * based on coyote-setup.c:
 + *      Copyright (C) 2003-2005 MontaVista Software, Inc.
 + *
-+ * Author: Imre Kaloz <Kaloz@openwrt.org>
+ * Author: Imre Kaloz <kaloz@openwrt.org>
 + */
 +
-+#include <linux/kernel.h>
-+#include <linux/init.h>
 +#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+#include <linux/i2c/at24.h>
 +#include <linux/if_ether.h>
-+#include <linux/socket.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/memory.h>
 +#include <linux/netdevice.h>
 +#include <linux/serial.h>
-+#include <linux/tty.h>
 +#include <linux/serial_8250.h>
 +#include <linux/slab.h>
-+#ifdef CONFIG_SENSORS_EEPROM
-+# include <linux/i2c.h>
-+# include <linux/eeprom.h>
-+#endif
+#include <linux/socket.h>
+#include <linux/types.h>
+#include <linux/tty.h>
 +
-+#include <linux/leds.h>
-+#include <linux/i2c-gpio.h>
-+#include <asm/types.h>
-+#include <asm/setup.h>
-+#include <asm/memory.h>
 +#include <mach/hardware.h>
 +#include <asm/irq.h>
 +#include <asm/mach-types.h>
 +#include <asm/mach/arch.h>
 +#include <asm/mach/flash.h>
+#include <asm/setup.h>
 +
 +struct cambria_board_info {
 +	unsigned char	*model;
-+	void		(* setup)(void);
+	void		(*setup)(void);
 +};
 +
 +static struct cambria_board_info *cambria_info __initdata;
@ -200,6 +154,30 @@
 +	},
 +};
 +
+static struct eth_plat_info cambria_npec_data = {
+	.phy		= 1,
+	.rxq		= 4,
+	.txreadyq	= 21,
+};
+
+static struct eth_plat_info cambria_npea_data = {
+	.phy		= 2,
+	.rxq		= 2,
+	.txreadyq	= 19,
+};
+
+static struct platform_device cambria_npec_device = {
+	.name			= "ixp4xx_eth",
+	.id			= IXP4XX_ETH_NPEC,
+	.dev.platform_data	= &cambria_npec_data,
+};
+
+static struct platform_device cambria_npea_device = {
+	.name			= "ixp4xx_eth",
+	.id			= IXP4XX_ETH_NPEA,
+	.dev.platform_data	= &cambria_npea_data,
+};
+
 +static struct resource cambria_uart_resource = {
 +	.start	= IXP4XX_UART1_BASE_PHYS,
 +	.end	= IXP4XX_UART1_BASE_PHYS + 0x0fff,
@ -257,30 +235,6 @@
 +	.resource		= cambria_pata_resources,
 +};
 +
-+static struct eth_plat_info cambria_npec_data = {
-+	.phy		= 1,
-+	.rxq		= 4,
-+	.txreadyq	= 21,
-+};
-+
-+static struct eth_plat_info cambria_npea_data = {
-+	.phy		= 2,
-+	.rxq		= 2,
-+	.txreadyq	= 19,
-+};
-+
-+static struct platform_device cambria_npec_device = {
-+	.name			= "ixp4xx_eth",
-+	.id			= IXP4XX_ETH_NPEC,
-+	.dev.platform_data	= &cambria_npec_data,
-+};
-+
-+static struct platform_device cambria_npea_device = {
-+	.name			= "ixp4xx_eth",
-+	.id			= IXP4XX_ETH_NPEA,
-+	.dev.platform_data	= &cambria_npea_data,
-+};
-+
 +static struct gpio_led cambria_gpio_leds[] = {
 +	{
 +		.name		= "user",  /* green led */
@ -300,7 +254,6 @@
 +	.dev.platform_data = &cambria_gpio_leds_data,
 +};
 +
-+
 +static struct latch_led cambria_latch_leds[] = {
 +	{
 +		.name	= "ledA",  /* green led */
@ -408,7 +361,6 @@
 +	platform_device_register(&cambria_npea_device);
 +}
 +
-+#ifdef CONFIG_SENSORS_EEPROM
 +static void __init cambria_gw2350_setup(void)
 +{
 +	platform_device_register(&cambria_npec_device);
@ -449,67 +401,58 @@
 +
 +	for (i = 0; i < ARRAY_SIZE(cambria_boards); i++) {
 +		struct cambria_board_info *info = &cambria_boards[i];
-+		if (strncmp(info->model, model, strlen(info->model)) == 0)
+		if (strcmp(info->model, model) == 0)
 +			return info;
 +	}
 +
 +	return NULL;
 +}
 +
-+struct cambria_eeprom_header {
-+	unsigned char mac0[ETH_ALEN];
-+	unsigned char mac1[ETH_ALEN];
-+	unsigned char res0[4];
-+	unsigned char magic[2];
-+	unsigned char config[14];
-+	unsigned char model[16];
+static struct at24_iface *at24_if;
+
+static int at24_setup(struct at24_iface *iface, void *context)
+{
+	char mac_addr[ETH_ALEN];
+	char model[6];
+
+	at24_if = iface;
+
+	/* Read MAC addresses */
+	if (at24_if->read(at24_if, mac_addr, 0x0, 6) == 6) {
+		memcpy(&cambria_npec_data.hwaddr, mac_addr, ETH_ALEN);
+	}
+	if (at24_if->read(at24_if, mac_addr, 0x6, 6) == 6) {
+		memcpy(&cambria_npea_data.hwaddr, mac_addr, ETH_ALEN);
+	}
+
+	/* Read the first 6 bytes of the model number */
+	if (at24_if->read(at24_if, model, 0x20, 6) == 6) {
+		cambria_info = cambria_find_board_info(model);
+	}
+
+	return 0;
+}
+
+static struct at24_platform_data cambria_eeprom_info = {
+	.byte_len	= 1024,
+	.page_size	= 16,
+	.flags		= AT24_FLAG_READONLY,
+	.setup		= at24_setup,
 +};
 +
-+static int __init cambria_eeprom_notify(struct notifier_block *self,
-+		unsigned long event, void *t)
-+{
-+	struct eeprom_data *ee = t;
-+	struct cambria_eeprom_header hdr;
-+
-+	if (cambria_info)
-+		return NOTIFY_DONE;
-+
-+	/* The eeprom is at address 0x51 */
-+	if (event != EEPROM_REGISTER || ee->client.addr != 0x51)
-+		return NOTIFY_DONE;
-+
-+	ee->attr->read(&ee->client.dev.kobj, ee->attr, (char *)&hdr,
-+		0, sizeof(hdr));
-+
-+	if (hdr.magic[0] != 'G' || hdr.magic[1] != 'W')
-+		return NOTIFY_DONE;
-+
-+	memcpy(&cambria_npec_data.hwaddr, hdr.mac0, ETH_ALEN);
-+	memcpy(&cambria_npea_data.hwaddr, hdr.mac1, ETH_ALEN);
-+
-+	cambria_info = cambria_find_board_info(hdr.model);
-+
-+	return NOTIFY_OK;
-+}
-+
-+static struct notifier_block cambria_eeprom_notifier __initdata = {
-+       .notifier_call = cambria_eeprom_notify
+static struct i2c_board_info __initdata cambria_i2c_board_info[] = {
+/*	{
+		I2C_BOARD_INFO("rtc-ds1672", 0x68),
+	},*/
+	{
+		I2C_BOARD_INFO("ad7418", 0x28),
+	},
+	{
+		I2C_BOARD_INFO("24c08", 0x51),
+		.platform_data	= &cambria_eeprom_info
+	},
 +};
 +
-+static void __init cambria_register_eeprom_notifier(void)
-+{
-+	register_eeprom_notifier(&cambria_eeprom_notifier);
-+}
-+
-+static void __init cambria_unregister_eeprom_notifier(void)
-+{
-+	unregister_eeprom_notifier(&cambria_eeprom_notifier);
-+}
-+#else /* CONFIG_SENSORS_EEPROM */
-+static inline void cambria_register_eeprom_notifier(void) {};
-+static inline void cambria_unregister_eeprom_notifier(void) {};
-+#endif /* CONFIG_SENSORS_EEPROM */
-+
 +static void __init cambria_init(void)
 +{
 +	ixp4xx_sys_init();
@ -531,7 +474,8 @@
 +	cambria_pata_data.cs0_cfg = IXP4XX_EXP_CS3;
 +	cambria_pata_data.cs1_cfg = IXP4XX_EXP_CS3;
 +
-+	cambria_register_eeprom_notifier();
+	i2c_register_board_info(0, cambria_i2c_board_info,
+				ARRAY_SIZE(cambria_i2c_board_info));
 +}
 +
 +static int __init cambria_model_setup(void)
@ -549,12 +493,10 @@
 +		cambria_gw23xx_setup();
 +	}
 +
-+	cambria_unregister_eeprom_notifier();
 +	return 0;
 +}
 +late_initcall(cambria_model_setup);
 +
-+#ifdef CONFIG_MACH_CAMBRIA
 +MACHINE_START(CAMBRIA, "Gateworks Cambria series")
 +	/* Maintainer: Imre Kaloz <kaloz@openwrt.org> */
 +	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
@ -565,15 +507,47 @@
 +	.boot_params	= 0x0100,
 +	.init_machine	= cambria_init,
 +MACHINE_END
-+#endif
--- a/arch/arm/mach-ixp4xx/include/mach/hardware.h
-+++ b/arch/arm/mach-ixp4xx/include/mach/hardware.h
-@@ -18,7 +18,7 @@
- #define __ASM_ARCH_HARDWARE_H__
+--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
+@@ -25,6 +25,14 @@ config MACH_AVILA
+ 	  Avila Network Platform. For more information on this platform,
+ 	  see <file:Documentation/arm/IXP4xx>.
 
- #define PCIBIOS_MIN_IO		0x00001000
-#define PCIBIOS_MIN_MEM		(cpu_is_ixp43x() ? 0x40000000 : 0x48000000)
-+#define PCIBIOS_MIN_MEM		(cpu_is_ixp43x() ? 0x48000000 : 0x48000000)
+config MACH_CAMBRIA
+	bool "Cambria"
+	select PCI
+	help
+	  Say 'Y' here if you want your kernel to support the Gateworks
+	  Cambria series. For more information on this platform,
+	  see <file:Documentation/arm/IXP4xx>.
+
+ config MACH_LOFT
+     bool "Loft"
+     depends on MACH_AVILA
+@@ -208,7 +216,7 @@ config CPU_IXP46X
 
- /*
-  * We override the standard dma-mask routines for bouncing.
+ config CPU_IXP43X
+ 	bool
+-	depends on MACH_KIXRP435
+	depends on MACH_KIXRP435 || MACH_CAMBRIA
+ 	default y
+ 
+ config MACH_GTWX5715
+--- a/arch/arm/mach-ixp4xx/Makefile
+++ b/arch/arm/mach-ixp4xx/Makefile
+@@ -7,6 +7,7 @@ obj-pci-n	:=
+ 
+ obj-pci-$(CONFIG_ARCH_IXDP4XX)		+= ixdp425-pci.o
+ obj-pci-$(CONFIG_MACH_AVILA)		+= avila-pci.o
+obj-pci-$(CONFIG_MACH_CAMBRIA)		+= cambria-pci.o
+ obj-pci-$(CONFIG_MACH_IXDPG425)		+= ixdpg425-pci.o
+ obj-pci-$(CONFIG_ARCH_ADI_COYOTE)	+= coyote-pci.o
+ obj-pci-$(CONFIG_MACH_GTWX5715)		+= gtwx5715-pci.o
+@@ -29,6 +30,7 @@ obj-y	+= common.o
+ 
+ obj-$(CONFIG_ARCH_IXDP4XX)	+= ixdp425-setup.o
+ obj-$(CONFIG_MACH_AVILA)	+= avila-setup.o
+obj-$(CONFIG_MACH_CAMBRIA)	+= cambria-setup.o
+ obj-$(CONFIG_MACH_IXDPG425)	+= coyote-setup.o
+ obj-$(CONFIG_ARCH_ADI_COYOTE)	+= coyote-setup.o
+ obj-$(CONFIG_MACH_GTWX5715)	+= gtwx5715-setup.o
--- a/target/linux/ixp4xx/patches-2.6.27/191-cambria_optional_uart.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/191-cambria_optional_uart.patch
@ -1,14 +1,14 @@
 --- a/arch/arm/mach-ixp4xx/cambria-setup.c
 +++ b/arch/arm/mach-ixp4xx/cambria-setup.c
-@@ -36,6 +36,7 @@
- #include <asm/mach-types.h>
+@@ -34,6 +34,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
+ #include <asm/setup.h>
 +#include <linux/irq.h>
 
 struct cambria_board_info {
 	unsigned char	*model;
-@@ -105,6 +106,43 @@ static struct platform_device cambria_ua
+@@ -127,6 +128,43 @@ static struct platform_device cambria_ua
 	.resource	= &cambria_uart_resource,
 };
 
@ -52,8 +52,8 @@
 static struct resource cambria_pata_resources[] = {
 	{
 		.flags	= IORESOURCE_MEM
-@@ -287,6 +325,19 @@ static void __init cambria_gw23xx_setup(
- #ifdef CONFIG_SENSORS_EEPROM
+@@ -283,6 +321,19 @@ static void __init cambria_gw23xx_setup(
+ 
 static void __init cambria_gw2350_setup(void)
 {
 +	*IXP4XX_EXP_CS2 = 0xbfff0003;
@ -72,7 +72,7 @@
 	platform_device_register(&cambria_npec_device);
 	platform_device_register(&cambria_npea_device);
 
-@@ -294,10 +345,26 @@ static void __init cambria_gw2350_setup(
+@@ -290,10 +341,26 @@ static void __init cambria_gw2350_setup(
 	platform_device_register(&cambria_usb1_device);
 
 	platform_device_register(&cambria_gpio_leds_device);
--- a/target/linux/ixp4xx/patches-2.6.27/192-cambria_gpio_device.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/192-cambria_gpio_device.patch
@ -1,6 +1,6 @@
 --- a/arch/arm/mach-ixp4xx/cambria-setup.c
 +++ b/arch/arm/mach-ixp4xx/cambria-setup.c
-@@ -214,6 +214,21 @@ static struct platform_device cambria_gp
+@@ -212,6 +212,20 @@ static struct platform_device cambria_gp
 	.dev.platform_data = &cambria_gpio_leds_data,
 };
 
@ -18,11 +18,10 @@
 +	.resource   = cambria_gpio_resources,
 +};
 +
-+
- 
 static struct latch_led cambria_latch_leds[] = {
 	{
-@@ -337,6 +352,11 @@ static void __init cambria_gw2350_setup(
+ 		.name	= "ledA",  /* green led */
+@@ -333,6 +347,11 @@ static void __init cambria_gw2350_setup(
 	cambria_optional_uart_data[1].membase	= (void __iomem *)ioremap(0x53FF0000, 0x0fff);
 	cambria_optional_uart_data[1].irq		= IRQ_IXP4XX_GPIO4;
 
@ -34,7 +33,7 @@
 	platform_device_register(&cambria_optional_uart);
 	platform_device_register(&cambria_npec_device);
 	platform_device_register(&cambria_npea_device);
-@@ -363,6 +383,10 @@ static void __init cambria_gw2358_setup(
+@@ -359,6 +378,10 @@ static void __init cambria_gw2358_setup(
 	cambria_optional_uart_data[1].membase	= (void __iomem *)ioremap(0x53F80000, 0x0fff);
 	cambria_optional_uart_data[1].irq		= IRQ_IXP4XX_GPIO4;
 
--- a/target/linux/ixp4xx/patches-2.6.27/294-eeprom_new_notifier.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/294-eeprom_new_notifier.patch
@ -1,183 +0,0 @@
--- a/drivers/i2c/chips/eeprom.c
-+++ b/drivers/i2c/chips/eeprom.c
-@@ -27,6 +27,8 @@
- #include <linux/jiffies.h>
- #include <linux/i2c.h>
- #include <linux/mutex.h>
-+#include <linux/notifier.h>
-+#include <linux/eeprom.h>
- 
- /* Addresses to scan */
- static const unsigned short normal_i2c[] = { 0x50, 0x51, 0x52, 0x53, 0x54,
-@@ -35,25 +37,7 @@ static const unsigned short normal_i2c[]
- /* Insmod parameters */
- I2C_CLIENT_INSMOD_1(eeprom);
- 
-
-/* Size of EEPROM in bytes */
-#define EEPROM_SIZE		256
-
-/* possible types of eeprom devices */
-enum eeprom_nature {
-	UNKNOWN,
-	VAIO,
-};
-
-/* Each client has this additional data */
-struct eeprom_data {
-	struct mutex update_lock;
-	u8 valid;			/* bitfield, bit!=0 if slice is valid */
-	unsigned long last_updated[8];	/* In jiffies, 8 slices */
-	u8 data[EEPROM_SIZE];		/* Register values */
-	enum eeprom_nature nature;
-};
-
-+ATOMIC_NOTIFIER_HEAD(eeprom_chain);
- 
- static void eeprom_update_client(struct i2c_client *client, u8 slice)
- {
-@@ -178,6 +162,7 @@ static int eeprom_probe(struct i2c_clien
- 	i2c_set_clientdata(client, data);
- 	mutex_init(&data->update_lock);
- 	data->nature = UNKNOWN;
-+	data->attr = &eeprom_attr;
- 
- 	/* Detect the Vaio nature of EEPROMs.
- 	   We use the "PCG-" or "VGN-" prefix as the signature. */
-@@ -202,6 +187,9 @@ static int eeprom_probe(struct i2c_clien
- 	if (err)
- 		goto exit_kfree;
- 
-+	/* call the notifier chain */
-+	atomic_notifier_call_chain(&eeprom_chain, EEPROM_REGISTER, data);
-+
- 	return 0;
- 
- exit_kfree:
-@@ -236,6 +224,41 @@ static struct i2c_driver eeprom_driver =
- 	.address_data	= &addr_data,
- };
- 
-+/**
-+ * register_eeprom_notifier - register a 'user' of EEPROM devices.
-+ * @nb: pointer to notifier info structure
-+ *
-+ * Registers a callback function to be called upon detection
-+ * of an EEPROM device.  Detection invokes the 'add' callback
-+ * with the kobj of the mutex and a bin_attribute which allows
-+ * read from the EEPROM.  The intention is that the notifier
-+ * will be able to read system configuration from the notifier.
-+ *
-+ * Only EEPROMs detected *after* the addition of the notifier
-+ * are notified.  I.e. EEPROMs already known to the system
-+ * will not be notified - add the notifier from board level
-+ * code!
-+ */
-+int register_eeprom_notifier(struct notifier_block *nb)
-+{
-+	return atomic_notifier_chain_register(&eeprom_chain, nb);
-+}
-+
-+/**
-+ *	unregister_eeprom_notifier - unregister a 'user' of EEPROM devices.
-+ *	@old: pointer to notifier info structure
-+ *
-+ *	Removes a callback function from the list of 'users' to be
-+ *	notified upon detection of EEPROM devices.
-+ */
-+int unregister_eeprom_notifier(struct notifier_block *nb)
-+{
-+	return atomic_notifier_chain_unregister(&eeprom_chain, nb);
-+}
-+
-+EXPORT_SYMBOL_GPL(register_eeprom_notifier);
-+EXPORT_SYMBOL_GPL(unregister_eeprom_notifier);
-+
- static int __init eeprom_init(void)
- {
- 	return i2c_add_driver(&eeprom_driver);
--- /dev/null
-+++ b/include/linux/eeprom.h
-@@ -0,0 +1,71 @@
-+#ifndef _LINUX_EEPROM_H
-+#define _LINUX_EEPROM_H
-+/*
-+ *  EEPROM notifier header
-+ *
-+ *  Copyright (C) 2006 John Bowler
-+ */
-+
-+/*
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ */
-+
-+#ifndef __KERNEL__
-+#error This is a kernel header
-+#endif
-+
-+#include <linux/list.h>
-+#include <linux/kobject.h>
-+#include <linux/sysfs.h>
-+
-+/* Size of EEPROM in bytes */
-+#define EEPROM_SIZE             256
-+
-+/* possible types of eeprom devices */
-+enum eeprom_nature {
-+	UNKNOWN,
-+	VAIO,
-+};
-+
-+/* Each client has this additional data */
-+struct eeprom_data {
-+	struct i2c_client client;
-+	struct mutex update_lock;
-+	u8 valid;			/* bitfield, bit!=0 if slice is valid */
-+	unsigned long last_updated[8];	/* In jiffies, 8 slices */
-+	u8 data[EEPROM_SIZE];		/* Register values */
-+	enum eeprom_nature nature;
-+	struct bin_attribute *attr;
-+};
-+
-+/*
-+ * This is very basic.
-+ *
-+ * If an EEPROM is detected on the I2C bus (this only works for
-+ * I2C EEPROMs) the notifier chain  is called with
-+ * both the I2C information and the kobject for the sysfs
-+ * device which has been registers.  It is then possible to
-+ * read from the device via the bin_attribute::read method
-+ * to extract configuration information.
-+ *
-+ * Register the notifier in the board level code, there is no
-+ * need to unregister it but you can if you want (it will save
-+ * a little bit or kernel memory to do so).
-+ */
-+
-+extern int register_eeprom_notifier(struct notifier_block *nb);
-+extern int unregister_eeprom_notifier(struct notifier_block *nb);
-+
-+#endif /* _LINUX_EEPROM_H */
--- a/include/linux/notifier.h
-+++ b/include/linux/notifier.h
-@@ -256,5 +256,8 @@ extern struct blocking_notifier_head reb
- #define VT_UPDATE		0x0004 /* A bigger update occurred */
- #define VT_PREWRITE		0x0005 /* A char is about to be written to the console */
- 
-+/* eeprom notifier chain */
-+#define EEPROM_REGISTER		0x0001
-+
- #endif /* __KERNEL__ */
- #endif /* _LINUX_NOTIFIER_H */
--- a/target/linux/ixp4xx/patches-2.6.27/296-avila_mac_plat_info.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/296-avila_mac_plat_info.patch
@ -1,43 +0,0 @@
--- a/arch/arm/mach-ixp4xx/avila-setup.c
-+++ b/arch/arm/mach-ixp4xx/avila-setup.c
-@@ -132,6 +132,31 @@ static struct platform_device avila_pata
- 	.resource		= avila_pata_resources,
- };
- 
-+/* Built-in 10/100 Ethernet MAC interfaces */
-+static struct eth_plat_info avila_npeb_data = {
-+	.phy		= 0,
-+	.rxq		= 3,
-+	.txreadyq	= 20,
-+};
-+
-+static struct eth_plat_info avila_npec_data = {
-+	.phy		= 1,
-+	.rxq		= 4,
-+	.txreadyq	= 21,
-+};
-+
-+static struct platform_device avila_npeb_device = {
-+	.name			= "ixp4xx_eth",
-+	.id			= IXP4XX_ETH_NPEB,
-+	.dev.platform_data	= &avila_npeb_data,
-+};
-+
-+static struct platform_device avila_npec_device = {
-+	.name			= "ixp4xx_eth",
-+	.id			= IXP4XX_ETH_NPEC,
-+	.dev.platform_data	= &avila_npec_data,
-+};
-+
- static struct platform_device *avila_devices[] __initdata = {
- 	&avila_i2c_gpio,
- 	&avila_flash,
-@@ -159,6 +184,8 @@ static void __init avila_init(void)
- 
- 	platform_device_register(&avila_pata);
- 
-+	platform_device_register(avila_npeb_device);
-+	platform_device_register(avila_npec_device);
- }
- 
- MACHINE_START(AVILA, "Gateworks Avila Network Platform")
--- a/target/linux/ixp4xx/patches-2.6.27/300-avila_fetch_mac.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/300-avila_fetch_mac.patch
@ -1,6 +1,6 @@
 --- a/arch/arm/mach-ixp4xx/avila-setup.c
 +++ b/arch/arm/mach-ixp4xx/avila-setup.c
-@@ -14,10 +14,18 @@
+@@ -14,10 +14,16 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/device.h>
@ -11,21 +11,19 @@
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
 #include <linux/slab.h>
-+#ifdef CONFIG_SENSORS_EEPROM
-+# include <linux/i2c.h>
-+# include <linux/eeprom.h>
-+#endif
+#include <linux/i2c.h>
+#include <linux/i2c/at24.h>
 +
 #include <linux/i2c-gpio.h>
 
 #include <asm/types.h>
-@@ -29,6 +37,13 @@
+@@ -29,6 +35,13 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 
 +struct avila_board_info {
 +	unsigned char	*model;
-+	void		(* setup)(void);
+	void		(*setup)(void);
 +};
 +
 +static struct avila_board_info *avila_info __initdata;
@ -33,7 +31,38 @@
 static struct flash_platform_data avila_flash_data = {
 	.map_name	= "cfi_probe",
 	.width		= 2,
-@@ -163,10 +178,160 @@ static struct platform_device *avila_dev
+@@ -132,16 +145,181 @@ static struct platform_device avila_pata
+ 	.resource		= avila_pata_resources,
+ };
+ 
+/* Built-in 10/100 Ethernet MAC interfaces */
+static struct eth_plat_info avila_npeb_data = {
+	.phy		= 0,
+	.rxq		= 3,
+	.txreadyq	= 20,
+};
+
+static struct eth_plat_info avila_npec_data = {
+	.phy		= 1,
+	.rxq		= 4,
+	.txreadyq	= 21,
+};
+
+static struct platform_device avila_npeb_device = {
+	.name			= "ixp4xx_eth",
+	.id			= IXP4XX_ETH_NPEB,
+	.dev.platform_data	= &avila_npeb_data,
+};
+
+static struct platform_device avila_npec_device = {
+	.name			= "ixp4xx_eth",
+	.id			= IXP4XX_ETH_NPEC,
+	.dev.platform_data	= &avila_npec_data,
+};
+
+ static struct platform_device *avila_devices[] __initdata = {
+ 	&avila_i2c_gpio,
+ 	&avila_flash,
 	&avila_uart
 };
 
@ -43,7 +72,6 @@
 +	platform_device_register(&avila_npec_device);
 +}
 +
-+#ifdef CONFIG_SENSORS_EEPROM
 +static void __init avila_gw2342_setup(void)
 +{
 +	platform_device_register(&avila_npeb_device);
@ -122,66 +150,57 @@
 +
 +	for (i = 0; i < ARRAY_SIZE(avila_boards); i++) {
 +		struct avila_board_info *info = &avila_boards[i];
-+		if (strncmp(info->model, model, strlen(info->model)) == 0)
+		if (strcmp(info->model, model) == 0)
 +			return info;
 +	}
 +
 +	return NULL;
 +}
 +
-+struct avila_eeprom_header {
-+	unsigned char mac0[ETH_ALEN];
-+	unsigned char mac1[ETH_ALEN];
-+	unsigned char res0[4];
-+	unsigned char magic[2];
-+	unsigned char config[14];
-+	unsigned char model[16];
+static struct at24_iface *at24_if;
+
+static int at24_setup(struct at24_iface *iface, void *context)
+{
+	char mac_addr[ETH_ALEN];
+	char model[6];
+
+	at24_if = iface;
+
+	/* Read MAC addresses */
+	if (at24_if->read(at24_if, mac_addr, 0x0, 6) == 6) {
+		memcpy(&avila_npeb_data.hwaddr, mac_addr, ETH_ALEN);
+	}
+	if (at24_if->read(at24_if, mac_addr, 0x6, 6) == 6) {
+		memcpy(&avila_npec_data.hwaddr, mac_addr, ETH_ALEN);
+	}
+
+	/* Read the first 6 bytes of the model number */
+	if (at24_if->read(at24_if, model, 0x20, 6) == 6) {
+		avila_info = avila_find_board_info(model);
+	}
+
+	return 0;
+}
+
+static struct at24_platform_data avila_eeprom_info = {
+	.byte_len	= 1024,
+	.page_size	= 16,
+	.flags		= AT24_FLAG_READONLY,
+	.setup		= at24_setup,
 +};
 +
-+static int __init avila_eeprom_notify(struct notifier_block *self,
-+			unsigned long event, void *t)
-+{
-+	struct eeprom_data *ee = t;
-+	struct avila_eeprom_header hdr;
-+
-+	if (avila_info)
-+		return NOTIFY_DONE;
-+
-+	/* The eeprom is at address 0x51 */
-+	if (event != EEPROM_REGISTER || ee->client.addr != 0x51)
-+		return NOTIFY_DONE;
-+
-+	ee->attr->read(&ee->client.dev.kobj, ee->attr, (char *)&hdr,
-+							0, sizeof(hdr));
-+
-+	if (hdr.magic[0] != 'G' || hdr.magic[1] != 'W')
-+		return NOTIFY_DONE;
-+
-+	memcpy(&avila_npeb_data.hwaddr, hdr.mac0, ETH_ALEN);
-+	memcpy(&avila_npec_data.hwaddr, hdr.mac1, ETH_ALEN);
-+
-+	avila_info = avila_find_board_info(hdr.model);
-+
-+	return NOTIFY_OK;
-+}
-+
-+static struct notifier_block avila_eeprom_notifier __initdata = {
-+       .notifier_call = avila_eeprom_notify
+static struct i2c_board_info __initdata avila_i2c_board_info[] = {
+/*	{
+		I2C_BOARD_INFO("rtc-ds1672", 0x68),
+	},*/
+	{
+		I2C_BOARD_INFO("ad7418", 0x28),
+	},
+	{
+		I2C_BOARD_INFO("24c08", 0x51),
+		.platform_data	= &avila_eeprom_info
+	},
 +};
-+
-+static void __init avila_register_eeprom_notifier(void)
-+{
-+	register_eeprom_notifier(&avila_eeprom_notifier);
-+}
-+
-+static void __init avila_unregister_eeprom_notifier(void)
-+{
-+	unregister_eeprom_notifier(&avila_eeprom_notifier);
-+}
-+#else /* CONFIG_SENSORS_EEPROM */
-+static inline void avila_register_eeprom_notifier(void) {};
-+static inline void avila_unregister_eeprom_notifier(void) {};
-+#endif /* CONFIG_SENSORS_EEPROM */
 +
 static void __init avila_init(void)
 {
@ -194,13 +213,12 @@
 	avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 	avila_flash_resource.end =
 		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
-@@ -184,9 +349,28 @@ static void __init avila_init(void)
+@@ -159,7 +337,28 @@ static void __init avila_init(void)
 
 	platform_device_register(&avila_pata);
 
-	platform_device_register(avila_npeb_device);
-	platform_device_register(avila_npec_device);
-+	avila_register_eeprom_notifier();
+		i2c_register_board_info(0, avila_i2c_board_info,
+				ARRAY_SIZE(avila_i2c_board_info));
 +}
 +
 +static int __init avila_model_setup(void)
@ -218,7 +236,6 @@
 +		avila_gw23xx_setup();
 +	}
 +
-+	avila_unregister_eeprom_notifier();
 +	return 0;
 }
 +late_initcall(avila_model_setup);
--- a/target/linux/ixp4xx/patches-2.6.27/301-avila_led.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/301-avila_led.patch
@ -1,14 +1,14 @@
 --- a/arch/arm/mach-ixp4xx/avila-setup.c
 +++ b/arch/arm/mach-ixp4xx/avila-setup.c
-@@ -26,6 +26,7 @@
- # include <linux/eeprom.h>
- #endif
+@@ -24,6 +24,7 @@
+ #include <linux/i2c.h>
+ #include <linux/i2c/at24.h>
 
 +#include <linux/leds.h>
 #include <linux/i2c-gpio.h>
 
 #include <asm/types.h>
-@@ -172,6 +173,72 @@ static struct platform_device avila_npec
+@@ -170,6 +171,72 @@ static struct platform_device avila_npec
 	.dev.platform_data	= &avila_npec_data,
 };
 
@ -81,7 +81,7 @@
 static struct platform_device *avila_devices[] __initdata = {
 	&avila_i2c_gpio,
 	&avila_flash,
-@@ -182,6 +249,8 @@ static void __init avila_gw23xx_setup(vo
+@@ -180,12 +247,16 @@ static void __init avila_gw23xx_setup(vo
 {
 	platform_device_register(&avila_npeb_device);
 	platform_device_register(&avila_npec_device);
@ -89,8 +89,7 @@
 +	platform_device_register(&avila_gpio_leds_device);
 }
 
- #ifdef CONFIG_SENSORS_EEPROM
-@@ -189,6 +258,8 @@ static void __init avila_gw2342_setup(vo
+ static void __init avila_gw2342_setup(void)
 {
 	platform_device_register(&avila_npeb_device);
 	platform_device_register(&avila_npec_device);
@ -99,7 +98,7 @@
 }
 
 static void __init avila_gw2345_setup(void)
-@@ -199,22 +270,30 @@ static void __init avila_gw2345_setup(vo
+@@ -196,22 +267,30 @@ static void __init avila_gw2345_setup(vo
 
 	avila_npec_data.phy = 5; /* port 5 of the KS8995 switch */
 	platform_device_register(&avila_npec_device);
@ -130,7 +129,7 @@
 }
 
 static void __init avila_gw2355_setup(void)
-@@ -225,11 +304,29 @@ static void __init avila_gw2355_setup(vo
+@@ -222,11 +301,29 @@ static void __init avila_gw2355_setup(vo
 
 	avila_npec_data.phy = 16;
 	platform_device_register(&avila_npec_device);
--- a/target/linux/ixp4xx/patches-2.6.27/302-avila_gpio_device.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/302-avila_gpio_device.patch
@ -1,6 +1,6 @@
 --- a/arch/arm/mach-ixp4xx/avila-setup.c
 +++ b/arch/arm/mach-ixp4xx/avila-setup.c
-@@ -239,10 +239,28 @@ static struct platform_device avila_latc
+@@ -237,10 +237,28 @@ static struct platform_device avila_latc
 	.dev.platform_data	= &avila_latch_leds_data,
 };
 
--- a/target/linux/ixp4xx/patches-2.6.27/303-avila_gw23x7_phy_quirk.patch
+++ b/target/linux/ixp4xx/patches-2.6.27/303-avila_gw23x7_phy_quirk.patch
@ -1,6 +1,6 @@
 --- a/arch/arm/mach-ixp4xx/avila-setup.c
 +++ b/arch/arm/mach-ixp4xx/avila-setup.c
-@@ -294,6 +294,7 @@ static void __init avila_gw2345_setup(vo
+@@ -291,6 +291,7 @@ static void __init avila_gw2345_setup(vo
 
 static void __init avila_gw2347_setup(void)
 {
@ -8,7 +8,7 @@
 	platform_device_register(&avila_npeb_device);
 
 	avila_gpio_leds[0].gpio = AVILA_GW23X7_LED_USER_GPIO;
-@@ -338,6 +339,7 @@ static void __init avila_gw2355_setup(vo
+@@ -335,6 +336,7 @@ static void __init avila_gw2355_setup(vo
 
 static void __init avila_gw2357_setup(void)
 {